The new dripless coupler is much better constructed than the old, by the way! The plastic part attached to the prop shaft is much beefier and is double hose clamped! Both the old and the new are the same brand, just purchased many years apart.

The old dripless coupling, showing the wear on both the stainless steel and the teflon faces.

This is the new part that attaches to the shaft. Note the double hose clamps (both held into deep grooves so that they can’t slip off).